This is DIY for a 03 - 08 Corolla .
I got the handle according to the color of the vehicle from the dealership .
Part Number # 69211-AA020-B1
Remove the hidden screw behind the inside handle - Then pull up the arm wrest and you will see two more screws then unplug the window switch .
Pull the panel away then where the latch assembly is remove the three screws gently push down the latch assembly making room to put tool through.
With a torx screw driver loosen the screw where the cap is held on then you can gently remove the cap with out making the screw fall out then slide in handle then reverse the process .
There you have it simple .